A teacher, and like I said, that's IF every farm/ranch in the U.S. grew max capacity, no cash crops (like tobbaco) and there was no destruction of excess. But, it does make sense that the U.S. grows alot more food then we need. If we didn't, we wouldn't need farm subsidies. If you're going to question the legitmacy of my teacher, he's been a reliable source in every other matter.
I mean no disrespect to your teacher, but if he has nothing to back this up. Meaning something written...documented research from a respectable source, then he is wrong. Teachers are fallible. ALL teachers are fallible. That is why in higher education institutions and in many places on this site, we refer so often to "Peer reviewed literature." That means that real research was done, validated, then reviewed by a board of "peers" or other experts in the area to be published. The people who did this research are respected in the industry, they are specialists within the biofuel and environmental fields, this is their LIFE'S WORK. They devote their lives to research and furthering the creation of new knowledge.
And unfortunately "He's been a reliable source in every other matter" means nothing. 1) You would have to go back and prove every previous claim to say that with any reliability 2) That is an appeal to authority (logical fallacy), basically saying that he is right because he's a teacher, not because he is correct.
This particular article was published in a very rigorous journal. VERY difficult to get into - basically if it appears, its a pretty good bet that it is true.
So on topic, I would LOVE to see the research or documentation to back up this claim. If every US farm grew to capacity and there were no cash crops, I still do not believe that we could "feed the world." It isn't simply a matter of land space. It is land usage, logistics in transportation, farmers to do the work, etc. There are a lot of other issues - including customer demand. Destroying excess is not done for no reason....bad crops, doesn't meet standards, etc...and this is a FACT of any manufacturing process. There is always waste.
As to the question of farm subsidies....we need them because farming IS NOT a very high earning industry. We offer subsidies to keep farmers growing food. If there were no subsidies, many farmers would simply pack up and become bankers. I really can't say that I understand the argument either, that "But, it does make sense that the U.S. grows alot more food then we need. If we didn't, we wouldn't need farm subsidies." If we are growing more than we need, how does it make sense that we need to pay farmers to continue to be farmers?
The subsidies in question here are for farmers to switch their crops OVER to biofuel crops. This was a government move to try to increase the pool of crops to help grow the biofuel industry. The main point here is that those subsidies may have moved the biofuel industry along, but they've hurt the food crops.
So Cuong, what is your argument? That we should continue to switch more crops to corn for biofuel production? Or that we should switch all biofuel crops back to food production?
Please understand, the thing to take away here is that you should question claims like this. When someone says "the US could feed the world 10 time over," this should set off alarms in your head - no matter who they are. That is your cue to go and RESEARCH! Forumulate an argument, then go back and challenge the professor. Go in there and quote the "Procedings of the National Academy of Science" and even if he disagrees....he will respect that you took the time to go review a real peer reviewed journal on the subject.